Hee-Seung Choi

ORCID: 0000-0003-4485-5919
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About
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Research Areas
  • Plant Molecular Biology Research
  • Plant Reproductive Biology
  • Plant nutrient uptake and metabolism
  • Polysaccharides and Plant Cell Walls
  • Plant Stress Responses and Tolerance
  • Photosynthetic Processes and Mechanisms
  • Photoreceptor and optogenetics research
  • Ion Channels and Receptors
  • Plant Pathogenic Bacteria Studies
  • Retinal Development and Disorders
  • Photochromic and Fluorescence Chemistry
  • Plant-Microbe Interactions and Immunity

University of California, Riverside
2023

Seoul National University
2011-2019

Doil Choi and colleagues report the genome sequence of hot pepper, Capsicum annuum, as well resequencing two cultivated peppers a wild species, chinense. Comparative genomic analysis across Solanaceae provides insights into expansion, pungency, ripening disease resistance in peppers. Hot pepper (Capsicum annuum), one oldest domesticated crops Americas, is most widely grown spice crop world. We whole-genome sequencing assembly (Mexican landrace annuum cv. CM334) at 186.6× coverage. also de...

10.1038/ng.2877 article EN cc-by-nc-sa Nature Genetics 2014-01-19

Root hair polar growth is endogenously controlled by auxin and sustained oscillating levels of reactive oxygen species (ROS). These cells extend several hundred-fold their original size toward signals important for plant survival. Although final cell fundamental importance, the molecular mechanisms that control it remain largely unknown. Here we show ROS production transcription factor RSL4, which in turn transcriptionally regulated through response factors (ARFs). In this manner, controls...

10.1073/pnas.1701536114 article EN Proceedings of the National Academy of Sciences 2017-05-01

ROOT HAIR SPECIFIC (RHS) genes, which contain the root hair-specific cis-element (RHE) in their regulatory regions, function hair morphogenesis. Here, we demonstrate that an Arabidopsis thaliana basic helix-loop-helix transcription factor, DEFECTVE SIX-LIKE4 (RSL4), directly binds to RHE vitro and vivo, upregulates RHS stimulates formation Arabidopsis. Orthologs of RSL4 from a eudicot (poplar [Populus trichocarpa]), monocot (rice [Oryza sativa]), lycophyte (Selaginella moellendorffii) each...

10.1105/tpc.16.00732 article EN The Plant Cell 2017-01-01

Auxin signaling is finalized by activator auxin response factors (aARFs) that are released from Auxin/Indole-3-Acetic Acid (Aux/IAA) repressors and directly activate auxin-responsive genes. However, it remains to be answered how repressor ARFs (rARFs) exert their repression function. In this study, we assessed the molecular biological functions of two putative co-repressor-binding motifs (EAR RLFGI) ARF2 (a rARF) in Arabidopsis thaliana. yeast two-hybrid assay, EAR mutation moderately RLFGI...

10.3389/fpls.2018.00372 article EN cc-by Frontiers in Plant Science 2018-03-21

Abstract Root hairs form a substantial portion of the root surface area. Compared with their nutritional function, physical function has been poorly characterised. This study investigates role Arabidopsis thaliana seedlings in interaction water and soil plant survival upon disruption. Five transgenic lines different hair lengths were used to assess hairs. Upon disruption by falling from height (mimicking rainfall), long-haired showed much higher anchorage rates than short-haired lines. The...

10.1038/s41598-019-47733-0 article EN cc-by Scientific Reports 2019-08-01

Abstract Root hair polar growth is endogenously controlled by auxin and sustained oscillating levels of reactive oxygen species (ROS). These cells extend several hundred-fold their original size toward signals important for plant survival. Although final cell fundamental importance, the molecular mechanisms that control it remain largely unknown. Here, we show ROS production transcription factors RSL4, which in turn transcriptionally regulated through Auxin Responsive Factors (ARFs). In this...

10.1101/116517 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2017-03-14
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